* update physics * update input * update * update code sharing in getting-help.md * Export Compliance * update on file i/o * pi / 4 * inputs * forum url * read only user * html5 gamepad * sdk api update * update * image properties * update editor * defold sdk update * animation updates * animation fix * run as admin * update bob * update about AndroidX support * software render * linux-faq.md update * 4.28.2021 updates * Basis Universal format * sound & mesh * gamepad event mapping * admob url * Minor edit to building blocks intro text * update gamepad & ios * project settings * libffi version * scaling * image compression * update gamepads * increase memory * caching assets * update 2021/10/6 * update 2021/10/16 blend-modes.md * update 2021/11/12 * allow dynamic transforms update * Bundle update * update faq * bullet & bob * script properties update * editor-styling * build server url * editor templates * spine extension update * Fix typo in the "optimizations" word in Chinese docs * Update to material.md - Constants buffers * Verify Graphics Calls * H5 parameters * OpenJDK downloads * cn update corresponds to [pull 259](https://github.com/defold/doc/pull/259) * application security * porting guidelines * update for 8f1651f * cn update for 094bf6f * cn update for 20fdfc5 & 6263317 * cn update for 7/19/2022 * title * profiling update * update editor.md * update bob.md * update shortcuts * update fixed update note * Update properties.md * Update material.md * Updates links * Update bob help with the latest info * camera & renderer * Updated android keystore info zh_cn * bundling.md release vs debug zh_cn * update bob.md & gui-clipping.md * contentless bundle * consoles update * model animation link * gamepad & faq * remove a camera lib * font shadow render mode fix * updates about app-manifest and others * Update script.md * includes in shaders * editor scripts * material updates
@@ -78,6 +78,19 @@ go.set("#sprite", "tint", vmath.vector4(1,0,0,1))
go.animate("#sprite", "tint", go.PLAYBACK_LOOP_PINGPONG, vmath.vector4(1,0,0,1), go.EASING_LINEAR, 2)
```
+CONSTANT_TYPE_USER_MATRIX4
+: 一个 matrix4 常量用以向你的着色器程序传递用户自定义数据. 在常量定义时可以赋初值, 而其值可以通过 [go.set()](/ref/stable/go/#go.set) / [go.animate()](/ref/stable/go/#go.animate) 修改. 还可以通过 [go.get()](/ref/stable/go/#go.get) 获取其值. 改变单一组件实例得材质常量会 [打断渲染合批导致更多得 draw call](/manuals/render/#draw-calls-and-batching).
+
+举例:
+```lua
+go.set("#sprite", "m", vmath.matrix4())
+```
+::: sidenote
+要使 `CONSTANT_TYPE_USER` 或 `CONSTANT_TYPE_MATRIX4` 类型的常量能使用 `go.get()` 和 `go.set()` 存取, 在着色器程序中必须使用到该常量. 如果常量在材质中定义了却没在着色器程序中使用, 它将被自动删除无法在运行时使用.
+:::
## 采样器
采样器用于从纹理 (瓷砖图源或者图集) 中取得颜色数据. 颜色数据用于在着色器程序中参与计算.
COCO